Author/Authors :
Feng، نويسنده , , Yunjiang and Davis، نويسنده , , Rohan A. and Sykes، نويسنده , , Melissa L. and Avery، نويسنده , , Vicky M. and Carroll، نويسنده , , Anthony R. and Camp، نويسنده , , David and Quinn، نويسنده , , Ronald J.، نويسنده ,
Abstract :
Bioassay-guided fractionation of the crude CH2Cl2/MeOH extract from the Australian ascidian Polysyncraton echinatum led to the isolation of a new pyridoacridine alkaloid, 12-deoxyascididemin (1), along with two known analogues, ascididemin (2) and eilatin (3). The structure of 1 was determined following extensive analysis of 1D/2D NMR and MS data. Biological evaluation showed that compounds 1–3 are potent antitrypanosomal agents with IC50 values of 0.077, 0.032, and 1.33 μM against Trypanosoma brucei brucei, respectively.
